Quartz outer tube



FIG. 1 is a perspective view of a quartz outer tube.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a top plan view thereof.

FIG. 4 is a bottom plan view thereof.

FIG. 5 is a cross sectional view thereof taken along line 5--5 in FIG. 2.

FIG. 6 is a rear elevational view thereof.

FIG. 7 is a right side view thereof, the left side view being a mirror image of the right view.

FIG. 8 is a cross sectional view thereof taken along line 8--8 in FIG. 3; and,

FIG. 9 is a cross sectional view thereof taken along line 9--9 is FIG. 3. 

I claim the ornamental design for a quartz outer tube, as shown and described. 